diff --git a/src/main/java/Simulator.java b/src/main/java/Simulator.java
index c3d0397..f63b5b8 100644
--- a/src/main/java/Simulator.java
+++ b/src/main/java/Simulator.java
@@ -106,7 +106,7 @@ public class Simulator implements GraphModificationFunctions {
         List<Vertex> alphaVertices = new ArrayList<>();
         //start with map of all alphas mapped to vertex values, get occupancy from the alphaWellCounts map
         for (Integer seq: plateAtoVMap.keySet()) {
-            Vertex alphaVertex = new Vertex(SequenceType.CDR1_ALPHA, seq, alphaWellCounts.get(seq), plateAtoVMap.get(seq));
+            Vertex alphaVertex = new Vertex(SequenceType.CDR3_ALPHA, seq, alphaWellCounts.get(seq), plateAtoVMap.get(seq));
             alphaVertices.add(alphaVertex);
         }
         graphGenerator.first(alphaVertices);